• Korean Journal of Child Studies
• /
• v.14 no.1
• /
• pp.129-139
• /
• 1993

The purpose of this study was (1) to explore the dimensions of children's self-esteem and (2) to explain the development of children's self-esteem through a short-term longitudinal approach. 219 children in 1st, 3rd, and 5th grades participated twice once each year over a 2 year period. Factor analysis, Pearson's correlation, Cronbach alpha, pairs t-test, and MANOVA were conducted. Instruments used in this study were made by present researchers. The results showed that (1) children's self-esteem consisted of the cognitive-competence self, peer-related self, teacher-related self, family self, negative self, and physically competent self: (2) the lst and 2nd grade children's self-esteem was higher than that of 3rd-6th grade children and the 3rd grade children's self-esteem changed little until they reached 5th grade, but the 6th grade children's self-esteem decreased.

• Korean Journal of Child Studies
• /
• v.24 no.5
• /
• pp.105-118
• /
• 2003

Construction of the Prosocial Behavior Scale for young children(PBSYC) was based on document research and interviews with kindergarten teachers and child development specialists. After 200 kindergarten teachers evaluated the 42 items of the PBSYC, factor analysis was conducted; items were categorized into seven factors: leadership, helping, communication, concern, proximity, sharing and empathy. As factors showed high correlation. The prosocial behavior of 306 4 to 5 year old children was measured with the PBSYC and compared with the Babock, Hartle & Lamme(l995) scale. The resulting correlation between the 2 scales was .764. Further tests indicate that the PBSYC is a valid and reliable scale for the measurement of prosocial behavior in young children.

• Journal of Digital Convergence
• /
• v.12 no.2
• /
• pp.475-482
• /
• 2014

A wide variety of contents are now provided along with the development of information appliances. The purpose of this study was to examine what should be considered to boost the quality of mobile device based e-learning contents. For this study, 12 evaluation domains and 26 evaluation items were selected using the Delphi method. The factors to be considered for mobile device based e-learning contents quality are summarized 4 factor. In other words, for the purpose of managing the quality of mobile device based e-learning contents, there exist four areas to be considered, 'foundation', 'contents', 'teaching design' and 'technology.' The findings of this study are expected to contribute to the improvement of the quality of the educational contents.

• Biomedical Science Letters
• /
• v.11 no.4
• /
• pp.539-543
• /
• 2005

Elevated level of serum cholesterol in humans is a risk factor correlated with the development of coronary heart disease. We have screened lactic acid bacteria from pig and human feces for the development of probiotics which have an anti-cholesterol effect. We have used special media to isolate only lactic acid bacteria and they were subjected to the experiments such as oxgal test, carbohydrate fermentation test. Results from the acid tolerance test and growth test in the presence of oxgal demonstrated that some strains would likely survive in thuman stomach, where acidity is high, and in small intestine, where bile fluid is present. In conclusion, we were able to screen lactic acid bacteria which were tolerant against bile acid and supposed to be prominent to lower the cholesterol level in human serum.

• 한국신재생에너지학회:학술대회논문집
• /
• 2005.06a
• /
• pp.592-599
• /
• 2005

Renewable energy technology development has been carrying out in 11 different areas so far. Many technologies are being applied to the required areas according to its own characteristics. Before launching the development, these technologies have been evaluated by their commercial effect and contribution to energy supply. In this paper, the impact factors enhancing the distribution of renewable energy were developed to select appropriate diffusion regulations for each technology area. In addition, AHP methodology was introduced to investigate priorities of the regulations along with weights of impact factors.

• Journal of KSNVE
• /
• v.10 no.2
• /
• pp.254-260
• /
• 2000

the reduction of the interior nosie level has been the main interest of NVH engineers in the development of vehicles. However, the consumer's perception on the car noise is affected largely by the psychoacoustic characteristics of the noise, as well as the sound pressure level. In this study, the quality of the vehicle interior nosie is analyzed by employing the subjective evaluations and by representing them in temrs of the objective quantities. The subjective evaluatins were performed for the seven vehicles in the range of subcompact to luxury cars. The methods of paired comparisons and semantic differential were used to study the preference, the quality of interior noise and their correlation. The linear regression models were obtained for the subjective evaluation and the sound quality metrics.

• International Journal of Quality Innovation
• /
• v.5 no.2
• /
• pp.70-78
• /
• 2004

Client-supplier collaboration in new product development (NPD) has been a strategy in response to fierce global competition. Traditionally, Hong Kong suppliers collaborate with worldwide clients through original equipment manufacturing (OEM) arrangement in which suppliers manufacture products according to clients' design. In recent years, a growing number of Hong Kong suppliers have transformed to original design manufacturing (ODM) in which they are assigned a design responsibility other than manufacturing products. The ODM arrangement necessitates a close interaction between clients and suppliers, which brings about intense conflict. Conflict has been recognized as an important factor affecting NPD performance including product quality. This paper studies the conflict handling practices of Hong Kong ODM suppliers based on 87 survey data. The results show that the suppliers frequently adopt effective conflict handling practices by which they can develop products of good quality through better design decisions. The results also suggest that the use of ineffective conflict handling behaviors, particularly avoiding, should be reduced for better product quality.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.13 no.1
• /
• pp.13-13
• /
• 1988

This paper considers the sequencing problem in mixed model assembly lines with hybrid workstation types and sequence-dependent setup times. Computation time is often a critical factor in choosing a method of determining the sequence. We develop a mathematical formulation of the problem to minimize the overall length of a line, and present a tabu search technique which can provide a near optimal solution in real time. The proposed technique is compared with a genetic algorithm and a branch-and-bound method. Experimental results are reported to demonstrate the efficiency of the technique.

• The Korean Journal of Community Living Science
• /
• v.21 no.2
• /
• pp.163-177
• /
• 2010

The purpose of this study is to examine the difference between service quality satisfactions according to tourists' preference and segmentation by various motivations. Data were collected from 442 farm stay visitors by field surveys in rural areas. A factor-clustering method identified three distinct segments; want-it-all, overall low motivation, relaxation. MANOVA was used to examine the differences of service quality satisfaction for farm stay visitors' preference and segmentation by motivation. Results show that the type of guest room more significantly influenced farm stay visitors' satisfaction according to those three clusters. It should be noted that we have information on the characteristics and type of satisfaction of the consumers in order to improve the quality of farmstay's service in rural tourism.

• Journal of the Korea Computer Industry Society
• /
• v.5 no.4
• /
• pp.471-480
• /
• 2004

A estimating capability of software effort, duration and cost is based on accurate size estimate of the software to be developed. A simplified function point (FP) approach to software size estimation is described, which first skip the computation step for value adjustment factor, thus directly obtaining final adjusted FP from unadjusted FP. The research seeks suitable models based on statistical regression models in the context of case study based on 783 software projects. The approach also are built for subsets of projects using new development, enhancement and re-development types.